Collision tests.

diff --git a/tests/test_collision.py b/tests/test_collision.py
new file mode 100644 (file)
index 0000000..c97992d
--- /dev/null
+++ b/tests/test_collision.py
@@ -0,0 +1,50 @@
+import collections
+
+from tests import TestCase, add
+
+from bulletml import collision
+
+Dummy = collections.namedtuple("Dummy", "x y px py radius")
+
+class Toverlaps(TestCase):
+    def test_inside(self):
+        self.failUnless(collision.overlaps(
+            Dummy(0, 0, 0, 0, 10),
+            Dummy(0, 0, 0, 0, 1)))
+
+    def test_near(self):
+        self.failUnless(collision.overlaps(
+            Dummy(0, 0, 0, 0, 1),
+            Dummy(0.5, 0.5, 0, 0, 1)))
+
+    def test_far(self):
+        self.failIf(collision.overlaps(
+            Dummy(0, 0, 0, 0, 1),
+            Dummy(20, 20, 0, 0, 1)))
+add(Toverlaps)
+
+class Tcollides(TestCase):
+    def test_cross(self):
+        a = Dummy(0, 0, 100, 100, 1)
+        b = Dummy(0, 100, 100, 0, 1)
+        self.failUnless(collision.collides(a, b))
+
+    def test_miss(self):
+        a = Dummy(0, 0, 100, 75, 1)
+        b = Dummy(0, 100, 75, 0, 1)
+        self.failIf(collision.collides(a, b))
+
+    def test_stationary(self):
+        a = Dummy(100, 0, 100, 0, 1)
+        b = Dummy(0, 100, 100, 0, 1)
+        self.failUnless(collision.collides(a, b))
+add(Tcollides)
+
+class Tcollides_all(TestCase):
+    def test_cross(self):
+        a = Dummy(0, 0, 100, 100, 1)
+        b = Dummy(100, 100, 0, 100, 1)
+        c = Dummy(0, 100, 100, 0, 1)
+        collides = collision.collides_all(a, [a, b, c])
+        self.failUnlessEqual(collides, [a, c])
+add(Tcollides_all)